Pliers.



e. B. wELuoN e F. B. RAMBO.

PLIERS.

APPLICATION FILED )UNE l2. |916.

Patented Feb. 20, 1917.

Y wvl-:mons

rms co., Punta-uma.. wnsumcvmn. n

GEORGE B. WELDON .AND FRANK B. IFMMVIBO,` 0F PITTSBURGH, PENNSYLVANIA.

IPLIERS.

Specification of Letters Patent.

Application filed .T une 12, 1916. Serial No. 103,178.

To all whom t may concern:

Be it known that we, GEORGE B. WnLDoN and FRANK B. RAMBO, residents ofPittsburgh, in the county of Allegheny and State of Pennsylvania, haveinvented anew and useful Improvement in Pliers, of which the followingis a specication.

This invention relates to pliers having removable working faces so thata single tool can be adapted for various purposes.

The object of the invention is to provide pliers of the kind describedin which the working faces can be readily and quickly removed andreplaced, but nevertheless are held securely in position while using thetool and without the use of separate locking or securing means.

The invention comprises the construction and arrangement of partshereinafter described and claimed.

ln the drawings, Figure 1 is a plan view of the pliers with theremovable faces in placa-.and showing the tool closed; Fig. 2 is asimilar view showing the tool opened to its extreme position to permitthe removal and insertion of the removable faces; Fig. 3 is a sectionalview on the line 3 3, Fig. 1, without the removable working face; Fig.`4 is a plan view of one of the removable faces; and Fig-5 shows amodified form of removable face.

The body of the pliers may be of the usual construction, and comprisesthe two handle members 1 and 2 pivotally connected at 3 and eachprovided with a jaw portion, marked 4 and 5 respectively. Each of thejaw portions is provided with a dovetailed groove 6 extendingtransversely thereof and preferably entirely across the same, andadapted to receive a correspondingly shaped projection 7 on the jaw faceor insert 8. The jaw faces or inserts are assembled on and removed fromthe jaw portions by merely sliding the projections 7 laterally into andout of the grooves 6.

In order to hold the jaw faces in place when the tool is being used, andwithout the use of separate fastening means, each'of the jaw members iscut away. on its knuckle portion, as at 9, but not entirely across itswidth, leaving a flange 10 on the outer face of each knuckle member, andwhich flanges, when the two members of the pliers are assembled, formbetween them a groove, as shown in Fig. 3. Each jaw face or insert 8 isprovided at its inner end with a projection 11 of reduced width adaptedto enter into the groove between the flanges 10, and to'be held by saidflanges 10 against lateral displacement. rlhe flanges 10 terminate at12, at the edges of the plier body, so that ratentea net. 2o, ieiv.

when the pliers are opened to their extrei'ne open position, as shown inFig. 2, an open space 13 is left on each side of the pliers opposite theprojections 11 on the jaw faces, and thus permitting said jaw faces orin serts to be inserted and removed. It will be understood that one ofsaid inserts is removed laterally toward one side of the pliers andtheother is removed laterally toward the other side of the pliers. Each jawportion 4 and 5, at its knuckle end is cut away, as at 14, in order tomake room for the flange 10` on the other member.

When it is desired to insert a jaw face, the pliers are opened to theirfullest extent, in which position the space 13 at the end of the flange10 will permit the jaw face to be slid laterally into place, thedovetailed pro jection 7 entering the dovetailed groove 6, and theprojection 11 on the inner end of said jaw face entering through thespace 13. In all other positions of the jaw members the flanges 10prevent displacement of the jaw faces or inserts laterally, andconsequently said jaw faces or inserts are held against accidental lossor displacement during the ordinary use of the tool.

Any number of removable jaw faces or inserts, with any desired contourof face, may be provided. Figs. 1 and 5 show two forms of such removablejaw faces, but obviously any desired form of working face may beprovided on the inserts 8, and a tool will be accompanied by a number ofsuch faces or inserts, all of which may be interchanged at will in themanner above described and therefore greatly widen the uses to which asingle pair of pliers can be put.

The tool described is very simple and coinpaot. There are no eXtra partsto be lost or to get out of adjustment, it being only necessary inassembling the device to open the working jaws to the fullest extent,when the removable faces can be readily slid into or out of position,and when the pliers are in use it is evident that the removable facesare securely locked in place so as to prevent their getting out ofproper adjustment, and at the same time this locking meansis such as topermit `the easy and ready removal or insertion Vof the Working faces. v

1 What We claim is z- 1. In a device of the character'described, a jaWend having a dovetailed groove in the face thereof extending across saidface and adapted to receive an undercut 'projection on a removable jaw'face, whereby the removable javv face maybe positioned therein Vby Ysliding it laterally into place, and a flange YVi5 on the other jaw`member outside the dovetailed groove for holding the removable faceinposition. Y '7.

vE2. In a device of the-character described,

. a jaw end, a dovetailedgroove extending across the face of saidjaW-end andV adapted to have an undercut projection on-the removv ablejaW face positionedY therein -by lateral kmovement'V of the :javv face,anda groove in i' the knuckle faceatthe base ofthe j aw end forreceiving a projection on the end of the f removable face vto llock theremovable face -inp'ositio'nl pliers,ra Apair of pivotedv 3.'.In'apair-fof members having ljaw ends, a dovetailed Ygroove extending acrossthe faceV of veachij avvV Yend"and-adapted to receive an undercut pro#jection onpa removable jaw face, a flange on Y so "the knuckle portionofeach member,"the tvvo flanges forming bet-WeenV them a groove,-and acutaway portion at the end of 'eachl a'nge adapted uponf'full opening ofthe jaw ends vtoadmit ofi-thc passage by lateral movement I Coples -ofthisrpatent may be obtained of a vprojection on theend of each of theremovable faces into the groove between the flanges, the flanges actingto prevent the removal of the jawfaces in any other position of the javvs.

4. A pair of pliers comprisinga pair of `pivoted members having jawends, a dove- 'tailed groove 1n each jaw end extending v transverselyacross the face thereof, a flange Y along lthe edge of-each knuckleportion and forming a groove therebetween, said flanges terminating atsuch point that When the pliers-are fully open an opening is yprovidedat each side of the pliers, a removable face on each jaw end having anundercut projection cooperating with its dovetailed groove andan endLprojection cooperating with the groove between the flanges on theknuckle portions to be thereby locked in place.

In testimony whereof, We have hereunto GEORGE B. VVELDON. FRANK B.RAMBO.

Y set our hands.

Witnesses:

GLENN H. LEREsoHE, C. B; SANDERsoN.

for -vve cents each, by addressing the Commissioner of lllatents,

. Washingtomncl

